06 Dak 3.7L Engine knock - Bad news!
Professional
Joined: Dec 2008
Posts: 173
Likes: 0
From: Troy, Ohio
Talk about reviving and old thread! The power of Google Searching!
Anyways, I have the exact same noise during startup. Most of us have some form of it. It seems to be more pronounced during the summer for me, but I have my windows down then lol.
I consider it normal.
Anyways, I have the exact same noise during startup. Most of us have some form of it. It seems to be more pronounced during the summer for me, but I have my windows down then lol.
I consider it normal.
My 05 Jeep Liberty w/3.7 and ONLY 50,000 miles also has these cold start noises as well.
I just called today and it's still under the 7yr/70k mile warranty until July.
I've read awhile back about the 3.7s having issues with some lifters NOT turning in their bores as they are supposed to. I remember reading it was a manufacturers defect but NO recalls were done.
We shall see what's going on with my 3.7 soon.
Last edited by Katmandu; Mar 26, 2012 at 07:05 PM.
Record Breaker
Joined: Dec 2010
Posts: 1,191
Likes: 1
From: Nova Scotia, CANADA
Mine doesnt seem to have any knock, and it gets cold started months and months every year, alot of the times I dont even let it warm up, and I have not had any engine problems, mine has 108,000km (67,000ish Miles) All I have done is oil changed, Spark Plugs and a TPS Sensor. Other then front end parts and Brakes
I also dont baby mine, and go between Driving it like I stole it sometimes, Off road, and Normal driving
I also dont baby mine, and go between Driving it like I stole it sometimes, Off road, and Normal driving
King Jackass
Joined: Jan 2008
Posts: 1,610
Likes: 5
From: Aurora, CO
This is from BG's website:
BG MOA® prevents oxidation and thickening of engine oil under even the most severe stop-and-go, high temperature driving conditions. It fortifies all qualities of engine oil to provide superior long-lasting engine protection and helps maintain optimum engine performance. BG MOA® keeps piston ring belts, hydraulic lifters and other engine components clean to help extend engine life and reduce costs of operation. It is compatible with both synthetic and petroleum-base oils. The Thin Film Oxidation Uptake Test (TFOUT), ASTM Test Method D4742, proves BG MOA’s remarkable resistance to oxidation by more than 200% longer than six major brands of SL quality oil. At the conclusion of the API Sequence IIIF Engine Test‚ a major brand, high-quality reference oil barely passed the 80-hour test with a viscosity increase of 255 percent. At 80 hours, another brand of oil fortified with BG MOA® had a viscosity increase of only 57 percent. At the conclusion of the triple-length, 240-hour test, it was still well within the viscosity limits with an increase of only 198 percent.
BG MOA® prevents oxidation and thickening of engine oil under even the most severe stop-and-go, high temperature driving conditions. It fortifies all qualities of engine oil to provide superior long-lasting engine protection and helps maintain optimum engine performance. BG MOA® keeps piston ring belts, hydraulic lifters and other engine components clean to help extend engine life and reduce costs of operation. It is compatible with both synthetic and petroleum-base oils. The Thin Film Oxidation Uptake Test (TFOUT), ASTM Test Method D4742, proves BG MOA’s remarkable resistance to oxidation by more than 200% longer than six major brands of SL quality oil. At the conclusion of the API Sequence IIIF Engine Test‚ a major brand, high-quality reference oil barely passed the 80-hour test with a viscosity increase of 255 percent. At 80 hours, another brand of oil fortified with BG MOA® had a viscosity increase of only 57 percent. At the conclusion of the triple-length, 240-hour test, it was still well within the viscosity limits with an increase of only 198 percent.
